ppapi/proxy/resource_creation_proxy.cc

// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "ppapi/proxy/resource_creation_proxy.h"

#include "ppapi/c/pp_errors.h"
#include "ppapi/c/pp_size.h"
#include "ppapi/proxy/interface_id.h"
#include "ppapi/proxy/plugin_dispatcher.h"
#include "ppapi/c/trusted/ppb_image_data_trusted.h"
#include "ppapi/proxy/plugin_resource_tracker.h"
#include "ppapi/proxy/ppapi_messages.h"
#include "ppapi/proxy/ppb_audio_proxy.h"
#include "ppapi/proxy/ppb_buffer_proxy.h"
#include "ppapi/proxy/ppb_broker_proxy.h"
#include "ppapi/proxy/ppb_context_3d_proxy.h"
#include "ppapi/proxy/ppb_file_chooser_proxy.h"
#include "ppapi/proxy/ppb_file_ref_proxy.h"
#include "ppapi/proxy/ppb_file_system_proxy.h"
#include "ppapi/proxy/ppb_flash_menu_proxy.h"
#include "ppapi/proxy/ppb_flash_net_connector_proxy.h"
#include "ppapi/proxy/ppb_flash_tcp_socket_proxy.h"
#include "ppapi/proxy/ppb_font_proxy.h"
#include "ppapi/proxy/ppb_graphics_2d_proxy.h"
#include "ppapi/proxy/ppb_graphics_3d_proxy.h"
#include "ppapi/proxy/ppb_image_data_proxy.h"
#include "ppapi/proxy/ppb_surface_3d_proxy.h"
#include "ppapi/proxy/ppb_url_loader_proxy.h"
#include "ppapi/proxy/ppb_video_capture_proxy.h"
#include "ppapi/proxy/ppb_video_decoder_proxy.h"
#include "ppapi/shared_impl/audio_config_impl.h"
#include "ppapi/shared_impl/font_impl.h"
#include "ppapi/shared_impl/function_group_base.h"
#include "ppapi/shared_impl/host_resource.h"
#include "ppapi/shared_impl/input_event_impl.h"
#include "ppapi/shared_impl/url_request_info_impl.h"
#include "ppapi/shared_impl/var.h"
#include "ppapi/thunk/enter.h"
#include "ppapi/thunk/ppb_image_data_api.h"

using ppapi::thunk::ResourceCreationAPI;

namespace ppapi {
namespace proxy {

ResourceCreationProxy::ResourceCreationProxy(Dispatcher* dispatcher)
    : InterfaceProxy(dispatcher) {
}

ResourceCreationProxy::~ResourceCreationProxy() {
}

// static
InterfaceProxy* ResourceCreationProxy::Create(Dispatcher* dispatcher) {
  return new ResourceCreationProxy(dispatcher);
}

ResourceCreationAPI* ResourceCreationProxy::AsResourceCreationAPI() {
  return this;
}

PP_Resource ResourceCreationProxy::CreateAudio(
    PP_Instance instance,
    PP_Resource config_id,
    PPB_Audio_Callback audio_callback,
    void* user_data) {
  return PPB_Audio_Proxy::CreateProxyResource(instance, config_id,
                                              audio_callback, user_data);
}

PP_Resource ResourceCreationProxy::CreateAudioConfig(
    PP_Instance instance,
    PP_AudioSampleRate sample_rate,
    uint32_t sample_frame_count) {
  return AudioConfigImpl::CreateAsProxy(
      instance, sample_rate, sample_frame_count);
}

PP_Resource ResourceCreationProxy::CreateAudioTrusted(PP_Instance instance) {
  // Proxied plugins can't created trusted audio devices.
  return 0;
}

PP_Resource ResourceCreationProxy::CreateBroker(PP_Instance instance) {
  return PPB_Broker_Proxy::CreateProxyResource(instance);
}

PP_Resource ResourceCreationProxy::CreateBuffer(PP_Instance instance,
                                                uint32_t size) {
  return PPB_Buffer_Proxy::CreateProxyResource(instance, size);
}

PP_Resource ResourceCreationProxy::CreateContext3D(
    PP_Instance instance,
    PP_Config3D_Dev config,
    PP_Resource share_context,
    const int32_t* attrib_list) {
  return PPB_Context3D_Proxy::Create(instance, config, share_context,
                                     attrib_list);
}

PP_Resource ResourceCreationProxy::CreateContext3DRaw(
    PP_Instance instance,
    PP_Config3D_Dev config,
    PP_Resource share_context,
    const int32_t* attrib_list) {
  // Not proxied. The raw creation function is used only in the implementation
  // of the proxy on the host side.
  return 0;
}

PP_Resource ResourceCreationProxy::CreateDirectoryReader(
    PP_Resource directory_ref) {
  NOTIMPLEMENTED();  // Not proxied yet.
  return 0;
}

PP_Resource ResourceCreationProxy::CreateFileChooser(
    PP_Instance instance,
    PP_FileChooserMode_Dev mode,
    const PP_Var& accept_mime_types) {
  return PPB_FileChooser_Proxy::CreateProxyResource(instance, mode,
                                                    accept_mime_types);
}

PP_Resource ResourceCreationProxy::CreateFileIO(PP_Instance instance) {
  NOTIMPLEMENTED();  // Not proxied yet.
  return 0;
}

PP_Resource ResourceCreationProxy::CreateFileRef(PP_Resource file_system,
                                                 const char* path) {
  return PPB_FileRef_Proxy::CreateProxyResource(file_system, path);
}

PP_Resource ResourceCreationProxy::CreateFileSystem(
    PP_Instance instance,
    PP_FileSystemType type) {
  return PPB_FileSystem_Proxy::CreateProxyResource(instance, type);
}

PP_Resource ResourceCreationProxy::CreateFlashMenu(
    PP_Instance instance,
    const PP_Flash_Menu* menu_data) {
  return PPB_Flash_Menu_Proxy::CreateProxyResource(instance, menu_data);
}

PP_Resource ResourceCreationProxy::CreateFlashNetConnector(
    PP_Instance instance) {
  return PPB_Flash_NetConnector_Proxy::CreateProxyResource(instance);
}

PP_Resource ResourceCreationProxy::CreateFlashTCPSocket(
    PP_Instance instance) {
  return PPB_Flash_TCPSocket_Proxy::CreateProxyResource(instance);
}

PP_Resource ResourceCreationProxy::CreateFontObject(
    PP_Instance instance,
    const PP_FontDescription_Dev* description) {
  if (!ppapi::FontImpl::IsPPFontDescriptionValid(*description))
    return 0;
  return (new Font(HostResource::MakeInstanceOnly(instance), *description))->
      GetReference();
}

PP_Resource ResourceCreationProxy::CreateGraphics2D(PP_Instance instance,
                                                    const PP_Size& size,
                                                    PP_Bool is_always_opaque) {
  return PPB_Graphics2D_Proxy::CreateProxyResource(instance, size,
                                                   is_always_opaque);
}

PP_Resource ResourceCreationProxy::CreateImageData(PP_Instance instance,
                                                   PP_ImageDataFormat format,
                                                   const PP_Size& size,
                                                   PP_Bool init_to_zero) {
  PluginDispatcher* dispatcher = PluginDispatcher::GetForInstance(instance);
  if (!dispatcher)
    return 0;

  HostResource result;
  std::string image_data_desc;
  ImageHandle image_handle = ImageData::NullHandle;
  dispatcher->Send(new PpapiHostMsg_ResourceCreation_ImageData(
      INTERFACE_ID_RESOURCE_CREATION, instance, format, size, init_to_zero,
      &result, &image_data_desc, &image_handle));

  if (result.is_null() || image_data_desc.size() != sizeof(PP_ImageDataDesc))
    return 0;

  // We serialize the PP_ImageDataDesc just by copying to a string.
  PP_ImageDataDesc desc;
  memcpy(&desc, image_data_desc.data(), sizeof(PP_ImageDataDesc));

  return (new ImageData(result, desc, image_handle))->GetReference();
}

PP_Resource ResourceCreationProxy::CreateKeyboardInputEvent(
    PP_Instance instance,
    PP_InputEvent_Type type,
    PP_TimeTicks time_stamp,
    uint32_t modifiers,
    uint32_t key_code,
    struct PP_Var character_text) {
  if (type != PP_INPUTEVENT_TYPE_RAWKEYDOWN &&
      type != PP_INPUTEVENT_TYPE_KEYDOWN &&
      type != PP_INPUTEVENT_TYPE_KEYUP &&
      type != PP_INPUTEVENT_TYPE_CHAR)
    return 0;
  ppapi::InputEventData data;
  data.event_type = type;
  data.event_time_stamp = time_stamp;
  data.event_modifiers = modifiers;
  data.key_code = key_code;
  if (character_text.type == PP_VARTYPE_STRING) {
    StringVar* text_str = StringVar::FromPPVar(character_text);
    if (!text_str)
      return 0;
    data.character_text = text_str->value();
  }

  return (new InputEventImpl(InputEventImpl::InitAsProxy(),
                             instance, data))->GetReference();
}

PP_Resource ResourceCreationProxy::CreateMouseInputEvent(
    PP_Instance instance,
    PP_InputEvent_Type type,
    PP_TimeTicks time_stamp,
    uint32_t modifiers,
    PP_InputEvent_MouseButton mouse_button,
    const PP_Point* mouse_position,
    int32_t click_count,
    const PP_Point* mouse_movement) {
  if (type != PP_INPUTEVENT_TYPE_MOUSEDOWN &&
      type != PP_INPUTEVENT_TYPE_MOUSEUP &&
      type != PP_INPUTEVENT_TYPE_MOUSEMOVE &&
      type != PP_INPUTEVENT_TYPE_MOUSEENTER &&
      type != PP_INPUTEVENT_TYPE_MOUSELEAVE)
    return 0;

  ppapi::InputEventData data;
  data.event_type = type;
  data.event_time_stamp = time_stamp;
  data.event_modifiers = modifiers;
  data.mouse_button = mouse_button;
  data.mouse_position = *mouse_position;
  data.mouse_click_count = click_count;
  data.mouse_movement = *mouse_movement;

  return (new InputEventImpl(InputEventImpl::InitAsProxy(),
                             instance, data))->GetReference();
}

PP_Resource ResourceCreationProxy::CreateGraphics3D(
    PP_Instance instance,
    PP_Resource share_context,
    const int32_t* attrib_list) {
  return PPB_Graphics3D_Proxy::CreateProxyResource(
      instance, share_context, attrib_list);
}

PP_Resource ResourceCreationProxy::CreateGraphics3DRaw(
    PP_Instance instance,
    PP_Resource share_context,
    const int32_t* attrib_list) {
  // Not proxied. The raw creation function is used only in the implementation
  // of the proxy on the host side.
  return 0;
}

PP_Resource ResourceCreationProxy::CreateScrollbar(PP_Instance instance,
                                                   PP_Bool vertical) {
  NOTIMPLEMENTED();  // Not proxied yet.
  return 0;
}

PP_Resource ResourceCreationProxy::CreateSurface3D(
    PP_Instance instance,
    PP_Config3D_Dev config,
    const int32_t* attrib_list) {
  return PPB_Surface3D_Proxy::CreateProxyResource(instance, config,
                                                  attrib_list);
}

PP_Resource ResourceCreationProxy::CreateTransport(PP_Instance instance,
                                                   const char* name,
                                                   PP_TransportType type) {
  NOTIMPLEMENTED();  // Not proxied yet.
  return 0;
}

PP_Resource ResourceCreationProxy::CreateURLLoader(PP_Instance instance) {
  return PPB_URLLoader_Proxy::CreateProxyResource(instance);
}

PP_Resource ResourceCreationProxy::CreateURLRequestInfo(
    PP_Instance instance,
    const PPB_URLRequestInfo_Data& data) {
  return (new URLRequestInfoImpl(
      HostResource::MakeInstanceOnly(instance), data))->GetReference();
}

PP_Resource ResourceCreationProxy::CreateVideoCapture(PP_Instance instance) {
  return PPB_VideoCapture_Proxy::CreateProxyResource(instance);
}

PP_Resource ResourceCreationProxy::CreateVideoDecoder(
    PP_Instance instance,
    PP_Resource context3d_id,
    PP_VideoDecoder_Profile profile) {
  return PPB_VideoDecoder_Proxy::CreateProxyResource(
      instance, context3d_id, profile);
}

PP_Resource ResourceCreationProxy::CreateVideoLayer(
    PP_Instance instance,
    PP_VideoLayerMode_Dev mode) {
  NOTIMPLEMENTED();
  return 0;
}

PP_Resource ResourceCreationProxy::CreateWheelInputEvent(
    PP_Instance instance,
    PP_TimeTicks time_stamp,
    uint32_t modifiers,
    const PP_FloatPoint* wheel_delta,
    const PP_FloatPoint* wheel_ticks,
    PP_Bool scroll_by_page) {
  ppapi::InputEventData data;
  data.event_type = PP_INPUTEVENT_TYPE_WHEEL;
  data.event_time_stamp = time_stamp;
  data.event_modifiers = modifiers;
  data.wheel_delta = *wheel_delta;
  data.wheel_ticks = *wheel_ticks;
  data.wheel_scroll_by_page = PP_ToBool(scroll_by_page);

  return (new InputEventImpl(InputEventImpl::InitAsProxy(),
                             instance, data))->GetReference();
}

bool ResourceCreationProxy::Send(IPC::Message* msg) {
  return dispatcher()->Send(msg);
}

bool ResourceCreationProxy::OnMessageReceived(const IPC::Message& msg) {
  bool handled = true;
  IPC_BEGIN_MESSAGE_MAP(ResourceCreationProxy, msg)
    IPC_MESSAGE_HANDLER(PpapiHostMsg_ResourceCreation_Graphics2D,
                        OnMsgCreateGraphics2D)
    IPC_MESSAGE_HANDLER(PpapiHostMsg_ResourceCreation_ImageData,
                        OnMsgCreateImageData)
    IPC_MESSAGE_UNHANDLED(handled = false)
  IPC_END_MESSAGE_MAP()
  return handled;
}

void ResourceCreationProxy::OnMsgCreateGraphics2D(PP_Instance instance,
                                                  const PP_Size& size,
                                                  PP_Bool is_always_opaque,
                                                  HostResource* result) {
  ppapi::thunk::EnterFunction<ResourceCreationAPI> enter(instance, false);
  if (enter.succeeded()) {
    result->SetHostResource(instance, enter.functions()->CreateGraphics2D(
        instance, size, is_always_opaque));
  }
}

void ResourceCreationProxy::OnMsgCreateImageData(
    PP_Instance instance,
    int32_t format,
    const PP_Size& size,
    PP_Bool init_to_zero,
    HostResource* result,
    std::string* image_data_desc,
    ImageHandle* result_image_handle) {
  *result_image_handle = ImageData::NullHandle;

  ppapi::thunk::EnterFunction<ResourceCreationAPI> enter(instance, false);
  if (enter.failed())
    return;

  PP_Resource resource = enter.functions()->CreateImageData(
      instance, static_cast<PP_ImageDataFormat>(format), size, init_to_zero);
  if (!resource)
    return;
  result->SetHostResource(instance, resource);

  // Get the description, it's just serialized as a string.
  ppapi::thunk::EnterResourceNoLock<ppapi::thunk::PPB_ImageData_API>
      enter_resource(resource, false);
  PP_ImageDataDesc desc;
  if (enter_resource.object()->Describe(&desc) == PP_TRUE) {
    image_data_desc->resize(sizeof(PP_ImageDataDesc));
    memcpy(&(*image_data_desc)[0], &desc, sizeof(PP_ImageDataDesc));
  }

  // Get the shared memory handle.
  const PPB_ImageDataTrusted* trusted =
      reinterpret_cast<const PPB_ImageDataTrusted*>(
          dispatcher()->local_get_interface()(PPB_IMAGEDATA_TRUSTED_INTERFACE));
  uint32_t byte_count = 0;
  if (trusted) {
    int32_t handle;
    if (trusted->GetSharedMemory(resource, &handle, &byte_count) == PP_OK) {
#if defined(OS_WIN)
      ImageHandle ih = ImageData::HandleFromInt(handle);
      *result_image_handle = dispatcher()->ShareHandleWithRemote(ih, false);
#else
      *result_image_handle = ImageData::HandleFromInt(handle);
#endif
    }
  }
}

}  // namespace proxy
}  // namespace ppapi